PMID- 22858665
OWN - NLM
STAT- MEDLINE
DCOM- 20130220
LR  - 20131121
IS  - 1364-5528 (Electronic)
IS  - 0003-2654 (Linking)
VI  - 137
IP  - 18
DP  - 2012 Sep 21
TI  - Octadecyltrimethoxysilane functionalized ZnO nanorods as a novel coating for 
      solid-phase microextraction with strong hydrophobic surface.
PG  - 4295-301
LID - 10.1039/c2an35542f [doi]
AB  - In this paper, we have, for the first time, proposed an approach by combining 
      self-assembled monolayers (SAMs) and nanomaterials (NMs) for the preparation of 
      novel solid-phase microextraction (SPME) coatings. The self-assembly of 
      octadecyltrimethoxysilane (OTMS) on the surface of ZnO nanorods (ZNRs) was 
      selected as a model system to demonstrate the feasibility of this approach. The 
      functionalization of OTMS on the surface of ZNRs was characterized and confirmed 
      using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy 
      (EDS). The OTMS-ZNRs coated fiber exhibited stronger hydrophobicity after 
      functionalization, and its extraction efficiency for non-polar benzene homologues 
      was increased by a factor of 1.5-3.6 when compared to a ZNRs fiber with almost 
      identical thickness and facade. In contrast, the extraction efficiency of the 
      OTMS-ZNRs coated fiber for polar aldehydes was 1.6-4.0-fold lower than that of 
      the ZNRs coated fiber, further indicating its enhanced surface hydrophobicity. 
      The OTMS-ZNRs coated fiber revealed a much higher capacity upon increasing the 
      OTMS layer thickness to 5 mum, leading to a factor of 12.0-13.4 and 1.8-2.5 
      increase in extraction efficiency for the benzene homologues relative to a ZNRs 
      coated fiber and a commercial PDMS fiber, respectively. The developed HS-SPME-GC 
      method using the OTMS-ZNRs coated fiber was successfully applied to the 
      determination of the benzene homologues in limnetic water samples with recovery 
      ranging from 83 to 113% and relative standard deviations (RSDs) of less than 8%.
FAU - Zeng, Jingbin
AU  - Zeng J
AD  - State key laboratory of heavy oil processing, College of Science, China 
      University of Petroleum, Qingdao, China.
FAU - Liu, Haihong
AU  - Liu H
FAU - Chen, Jinmei
AU  - Chen J
FAU - Huang, Jianli
AU  - Huang J
FAU - Yu, Jianfeng
AU  - Yu J
FAU - Wang, Yiru
AU  - Wang Y
FAU - Chen, Xi
AU  - Chen X
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120803
PL  - England
TA  - Analyst
JT  - The Analyst
JID - 0372652
RN  - 0 (Silanes)
RN  - 0 (Water Pollutants, Chemical)
RN  - 18623-11-5 (octadecylsilane)
RN  - J64922108F (Benzene)
RN  - SOI2LOH54Z (Zinc Oxide)
SB  - IM
MH  - Benzene/*analysis
MH  - Hydrophobic and Hydrophilic Interactions
MH  - Microscopy, Electron, Scanning
MH  - *Nanotubes
MH  - Silanes
MH  - Solid Phase Microextraction/*methods
MH  - Spectrometry, X-Ray Emission
MH  - Water Pollutants, Chemical/*analysis
MH  - Zinc Oxide
EDAT- 2012/08/04 06:00
MHDA- 2013/02/21 06:00
CRDT- 2012/08/04 06:00
PHST- 2012/08/04 06:00 [entrez]
PHST- 2012/08/04 06:00 [pubmed]
PHST- 2013/02/21 06:00 [medline]
AID - 10.1039/c2an35542f [doi]
PST - ppublish
SO  - Analyst. 2012 Sep 21;137(18):4295-301. doi: 10.1039/c2an35542f. Epub 2012 Aug 3.